[OracleType] Remove useless remarks (#2480)

Author: mairaw

xml/System.Data.OracleClient/OracleType.xml

@@ -16,14 +16,7 @@
   </Base>
   <Docs>
     <summary>Specifies the data type of a field or property for use in an <see cref="T:System.Data.OracleClient.OracleParameter" />.</summary>
-    <remarks>
-      <format type="text/markdown"><![CDATA[  
-  
-## Remarks  
- The following table shows mappings between <xref:System.Data.OracleClient.OracleType> data types, Oracle data types, and .NET Framework types.  
-  
- ]]></format>
-    </remarks>
+    <remarks>To be added.</remarks>
   </Docs>
   <Members>
     <Member MemberName="BFile">
@@ -651,4 +644,4 @@
       </Docs>
     </Member>
   </Members>
-</Type>
+</Type>